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The road to the museum is lit up with 960 light bulbs of different colours.
25% of the light bulbs are red in colour.
85% of the remaining light bulbs are green in colour.
There are 79 orange coloured light bulbs and the rest are violet in colour.
(a) How many violet coloured light bulbs are there?
(b) What percentage of the total light bulbs are green coloured?
Notes to student: